Combined latch and lock



E. CRDMPTDN AND C. L. CROOKS.

COMBINED LATCH AND LOCK.

APPLICATION FILVED AUG.5, 1918- Patented Oct. 12, 1920.

www amk 4@ UNITED STATES EDWIN CROMPTON AND CHARLES L. CROOKS, OFPUEBLO, COLORADO.

COMBINED LATCH AND Loox.

Specification of Letters Patent. Patented Oct; 12 1920.

Application mea August 5, 191s. serial No. 248,320.

To all whom t may concern.'

Be it known that we, EDWIN CROMPTON and CHARLES L. CnooKs, citizens ofthe United States, residing at Pueblo, in the county of Pueblo and Stateof Colorado, have invented certain new and useful Improvements inCombined Latches and Locks; and we do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in theart to which it apper' vact of closing thedoor, and in which the unlocking and unlatching operation may beperformed without the use of keys or similar devices by depressing asingle operating Ishoulder 21 and against the inner face of member. Y

In its broaderf aspects, our invention comprises a casing that isadapted to be mounted on or within a door jamb. The casing incloses theoperatively connected portions of.

the elements which include a locking or latching bolt resilientlyprojecting from the casing in-the normal position of the device, p andyasecond bolt normally projecting from the casing and adapted to lock ordog a spring-pressed ,plunger which, when released, engages and locks ordogs the locking or latching bolt.

The vobjects and novel features of the invention will be apparent fromftheV following description taken in connection with the drawing inwhich*- rie'dibv thedoor being shown'as about'to Figure 1 is averticalsectional view of a combined latch and lockembodving our invention. theparts beingshownin normal or unlocked position. and the `keeper' car- Ymove into'c'losed position; l

Figa2 is a vertical'sectional Aviewsi'milar l to Fig..1except'that thekeeper lis shownin' vposition'with the parts in latched and lockedposition;

Fig. V3is a transverse vertical 'sectiony f taken on the use s aoffrigp;

:Figs 4 and 5 are horizontal y'sectional views taken. respectively, onthe lines 4--4 and 5'5Vofk Fig. `2; an r F ig. 6 is a face view of thekeeper that is adapted to be attached to the door.l

Referring to the drawing, 10 designates the casing that contains most ofthe operating mechanism of the device, the casing comprising side plates11 formed integral with an end plate 12 to which the face plate 13 issecured.` 'The end plate 12 and face plate 13 are provided withregistering Vapertures 14 and 15, arranged vertically above one anotherand. providing openings through which the bolts A and B are pro-` jectedin the normal or unlocked position 11. A spring 20 surrounds the reducedpor' tion 17 of the bolt A and bears against a the cross brace 19,tending to project the belt through vthe apertures 14. The outwardmovement of the bolt A is limited by a stop pin 22 carried by the bolt.The bolt B has a semi-spherical head 23 and is slidable in an aperture25 in the Vcross brace 26 in line with the apertures 1,5. The brace 26is below the brace 19 and also seycured to theside plates 11 of thecasing.

The vcasing is thus substantially open atthe rear except for thesebraces. A spring 27 surrounds the rear end of the shank 24, one endthereof bearingY against the inner face of the cross brace 26 and itsopposite end i bearing against a pin 28 carried b v vthe bolt. Thespring 27 rcsiliently presses the bolt, B

outwardly to project the knob 23 from the face plate of the casing, theoutward movement of the bolt being limited by an enlargement29 carriedby the bolt.

The locking and unlocking plunger P consists of a comparatively Vlong-rod 4,substan-v tially rectangular'in section and isreciprocable inguides formedby apertures 30 and '31 in cross braces32 and 33. VThelower end of the plunger P isgreduced as alt-34 to provide a shoulder 35forming a bearing for #the upper end 'of the actuating spring 36 `thatprojects outwardly through the apertures 1'5 and-is carried by a shank24 that is substantially rectangular in cross section plunger,

bolt

ceive a portion of the rectangular part of Y the ,clogging bolt A whenthe latter is in its normal or projected positionas seen in Fig. 1. Theengagement of the notch of the plunger P by the bolt A locks o r dogsthe plunger in a depressed position presses the spring 86, storingVenergy in the latter so that when the bolt A unlocks the the latter willbe projected upwardly to notch 42 of a size and depth to permit theupward movement ofthe plunger past the bolt when the latter isretracted. At the saine time a portion ofthe plunger moves into thenotch 42 and locks lor dogs the bolt A against"V outward 4 movementuntil the plunger is again depressed.

Y 1n the normal or unlocked position of the i device as shown'in Fig.1', the'bolt B is freely spring movable inward against the pressure ofthe'` 27 since the notch 41 of the plunger registers with -t'he shank 24of this bolt. The

shank 24'also has a square-shouldered notch ..43 in the side thereofVfacing vthe plunger so that in the normal unlocked and unlatchedposition of the device thefplunger may moveV transversely ofthe bolt' B.

' Upon releaseVY of the plunger vby the inward movement of the boltV thespring 36 moves the same upwardly and a portion of the plunger 'belowthe notch 41 enters the notch 43 on the bolt B,thereby locking or.clogging the latter against lmovementV inwardly or outwardly.

[A keeper designed for useV with the latch Y and lockembodying this'invention is shown vin Fig. 6, and comprises a face plate l45attachablet'o the edge of a door.V The plate has la ychannel portion l46provided Vwith a 'cam surface 47 thatis adapted to engage the Y cui-vedprojectingend=48v of therrblt A. vThe plate also'has formed'integr'allytherewith a lip 49 disposed in advance of adepression or socket 50adaptedto receivethe'knob 23 on thebolt B." The lip V49 has an inner camA it to'fpass over a shoulder j52that *locksV or surface 51 byfmeanspfwhich the knobV is retractedupon *closingv the door to permit ylatchesitin place. f

'Assuming the lock'andlatch to be in itsV normal or unlocked-positionas-'show-n `in A Fig. 1, the operation of the device is as foland comyressedfto permit it to pass over the shoulc er 52 and at the saine timethe bolt A is being forced inwardly by the cam 47. After the knob 23ofthebolt B snaps into the socket 50 theV notch 4,2.on the bolt A movesinto register with the plunger, releasing the latter, which is shotupwardly bythe springr36. .This moves the plunger so that.' aportion`ther`eof will be located in thenotch 434 of the bolt B, lockingor cloggingthe knob 23 of :the latter in the socket 50, as shown in Fig.2.

In order t'o Vopenfthe door, the button 38 is pressed downwardly forcingithe plunger into the position in which the notchA 41.

registers with the shank 24of .the bolt B, y

whereupon the door may be opened gently pushing the same outward. Thebolt A will thereupon be shot out by the spring 2O and willl lock theplunger in its depressed Y or normal position. lock or dog the bolt B.The A is provided with a squareshoulder combined lock and latch indetail itis to be undeistood'that various' features thereof may bemodified 4without ,departing from the spirit of theinvention. ,i WhatAwe claimis:

1. A latch comprising a Alocking and'un-V locking plunger, meansreleasable by a keeper for retaining said plunger in unlock- V'ingposition,Y aA bolt, saicl 'plunger being adapted to engage said bolt,vand IlQLIls` Y whereby the plunger is moved into .position to lock'said bolt when said retaining'ineans Y is released.'v p y. 2. Alatchvcomprising a locking and un- While we have shownV anddeseribed'oui'. s

locking plungergtwo bolts .adaptedrjandarf Y ranged for engagement. by.keeper means,

.said bolts being movable transversel'yof said plunger, one of saidboltstreleasal'ily locking said plunger in said position, and, means wherebythe plunger is inoved intoposition to lock the otherbolt whensaid.lockingb'olt lis released. A

' .3. VAV latch comprising two; bolts adapted and arranged forengagement* by Va suitable keeper on a door jainb, avplungerfand means 1whereby said plunger is normally .releasably' locked or dogged by onelof Ysaid bolts, and

adaptedto engage .andlock 1or dog the .other bolt .whenreleased by the`operation Ve'f ,the [i :first mentioned bolt. x Y n K 4. latchycomprising'..two bolts,ifa;plun ger extending across both boltsa-ndhaving fmeans at' 4one .end for manually foperating it,

means whereby said plunger- .is :releasably locked or dogged by oneof.saidbolts,means whereby the other bolt is locked'orgdogged bysaidplunger. when the latter is released,

andY means vfor. actuatingthe plungerywhen itv yitireleased. s. Y I YA5'. A latch comprising-.Afa depress'ible',plun;..- f ger, Y anactuating spring surrounding .the

saine in which energy is stored :when Asaid l plunger is depressed,means for releasably locking said plunger in its depressed position, abolt, and means whereby said bolt is locked when said plun er isreleased.

6. A latch comprising a plurality of notched bolts, and means,comprising a notched plunger extending across both bolts, whereby onebolt controls the movement of the other bolt.

7. A latch comprising a pluralit of spring-pressed notched bolts arrangeone above the other, and a spring -pressed notched plunger extendingabove the upper bolt, the arrangement being such that one of said boltslocks or dogs said plunger in the normal position of the device and saidplunger is actuated to lock or dog the other bolt when the plunger isreleased by a movement of the bolt that normally locks or dogs it.

8. A latch comprising a depressible plunger, an actuating springtherefor in which energy is stored when said plunger is depressed, aspring-pressed bolt for releasably locking or dogging said plunger inits depressed position, and a second bolt, both of said bolts extendingacross said plunger and being movable transversely of said plunger inthe depressed position of the latter, and the plunger beingautomatically moved into position to lock or dog said second bolt whenthe other bolt releases said plunger.

9. A latch comprising a depressible plunger having two notches, adepressible bolt engaging. a shoulder formed byone of saidv notches andlocking or clogging said plunger in depressed position in the normalcondition of the device, said bolt having a notch ldisposed within saidcasing and a part at its upper end accessible from the exterior of saidcasing for manually depressing the plunger, an actuating spring thereforin which energy is stored when said plunger isl depressed, means forreleasably locking said plunger in its depressed position, a bolt havinga head projecting from saidcasing and a shoulder within the casing, thearrangement being such that a part carried by said plunger engages saidshoulder to lock said bolt when the said locking means is released.

1l. In a lock, the combination of a locking bolt, a spring surroundingsaid bolt for actuating it, a device for retaining said bolt in itslocking position, such device being removable to release or unlock saidbolt, a spring surrounding said device for moving the same to lock saidbolt, means for retaining said device in the position in which itreleases or unlocks said bolt, and a spring surrounding such retainingmeans for operating the same..

In testimony whereof we hereunto aix our signatures. f

EDWIN CROMPTON. CHARLES L. oRooKs.

